Instead of their liberal opinion(s) only leading to one vote ... their own ... their misguidedness was able to be leveraged to indoctrinate the generations that followed.
There is definitely truth to that, but those children of the 60s and 70s gave us something that we did not have in 1970, an alternative to the left’s absolute control of the media.
Today we have talk radio, conservative book publishing, Fox, magazines, counter science to the left on everything from sex to climate, effective pro-life groups, mass (and effective) conservative movements like the tea party and so on, we often control the Congress, Senate, and Supreme Court, in 1970 all the young had for information, was the left’s view, and the left controlled everything.
In the 1960s and 1970s the left was all-powerful and passed legislation without challenge, bold, sweeping, nation destroying, legislation that would be impossible today, like the immigration law that did this to us.
This health care thing is a throw back to that “greatest generation” type legislation, but while it is a rare 60s type victory for the left, it is far from over or decided.